Apparatus for making nozzles



July 24, 192s. v v1,678,451 J. H. TAYLOR u ed March 15, 1924 /f/Q'J. ZZQQ 5. A

/munudlllwnnwW f ffwfmf Patented July. 24, 1928.

UNITED i STATES PATENT OFFICE.

JAMES HALL TAYLOR, F om: PARK, ILLINOIS. i

APPARATUS FOR MAKING NOZZLES.

IApplication filed March 15, 1924. Serial No. 699,516.

atively higher tensile strength than hereto` fore used for this purpose.To forge nozzles from this metal and to prevent overstraining the neckportion of the nozzle, it is desirable that the stretching of lthisportionl be limited. This I achieve by my improved f apparatus.`

Referring to the accompanying drawings illustrating my apparatus and thepreferred sequence of steps in the process carried out Atherebyzi v Fig.l is a sectional view of the original blank; l

Fig. 2 is a sectional view showing the first step of forming a flange onthe blank;

F ig. 3 shows this flanged blank inserted in position between the dieswhich perform the following' operations;

Fig. 4 shows the first action ofthe dies in drawing or shaping theflange formed on the lower edgey of the blank downwardly in a 3" curve;

Fig. 5 shows the step of .forcing metal from the upper body portion ofthe blank down into the tubular neck of the nozzle; i

Fig. 6 shows the nozzle in completed outline with a flange formed on theupper end thereof; and

Fig. 7 is a sectional view of the finished nozzle, with the end of thetubular neck punched out.

The wrought metal'blank 10 is shown in Fig. 1. For high pressurenozzles, such as the present -invention contemplates, the

metal in the blank 10 is ofv high tensile strength.

yThe first step vin the process is to form an annular flange lllaroundthe bottom of the blank by a suitable die operation, as shown in Fig. 2.This leaves the blank with an upper body of metal 10 and the lowerflange 5o 11 portion 10 of the blank, being dropped The blank is nowplaced on the upper end i down. onto the flange 11. This'female die iss'pl1t into two halves for convenient removal from over the nozzle, as Ishalll presently describe. vThe female die has a central die opening 17,the lower end of which joins with the bottom surface of the die througha gradual curve 18. A spacer 21 is then mounted on the top of the femaledie 16 to prevent the initial part of the downward thrust ofthe dieplate 22 from engaging the upper projecting end ofthe portion 10.

The initial part of this downward'motion is thus concentrated on theprojecting flange 11, and operates to draw or shape this flangedownwardly away from the body portion 10.to approximately the positionand shape indicated in Fig. 4:, where the flange conforms substantiallyto the curvature 18 of the female die 16. It will be apparent. that thespacer 2l has "the function of producing concurrent motion between thedie plate'22 and the 4female die 16 during'a desired portion of theforming operation, .but it will'be obvious to lthose skilled in the artthat other 'means may be employed to secure this concurrent motionduring this portion of .the forming operation.

After the flange has been shaped substantially as shown, the die plate22 engages the body portion 10 of the blank, and thereafter the pressure4applied to the top of the blank f forces the solid upper end of theblank down against `the top of the male die 15 under the continuedmotion of the die plate 22 and. the female die 16. The upper bodyportion of the blank being confined laterally b the walls of the dieopening 17, the heated metal is forced, under Vthe very high pressurecreated between the die plate 22 and the top of themale die 15, downinto the annular opening between the male die 15 and the female die 16.

This downward forcing of the metal may be continued to the 'desiredpoint depending upon the quantity of metal that-it is. de-

sired to supply from the ball or bodyportion 10 to the tubular neck.Fig. 5 illustrates how farthis operation of supplying or dischargingmetal from the body portion into the ytubular neck can be carried. At

the completion of this operation the opposing die faces 18 and 23 willlie in subst-antial parallelism; or'. if a tapered section is desiredinthe finished neck of the nozzle, these two die surfaces willlie at theproper lmay flatten out somewhat, as illustrated ine Fig. 5.

In performing the next step, the spacer 21 is removed and the ram or dieface 22 is brought down against' the bulged upper end of the blank,flattening this metal dovvn into an annular recess 19 to form theupperflange 25. While I have shown this annular recess as being formed in thetop of the female die, it will be obvious that it maybe formed in thebottom of the die plate. Such a recess is, however, only necessary whenit is desired to limitA the size of the flange in this manner, as theangevcould be formed betweengtwo fiat faces on the female die and dieplate. A thin-disc of metal 26 is preferably left between the upper endof the male die 15 and the bottom of the die face 22 to preventcontactbetween the dies.

As a final stepthe disc 26 is removed. The femals die 16 is a split dieto permit of the removal of the nozzle.

I claim:

1. In die mechanism for forming nozzles, the combination of a male die,a female die, a die plate adapted to produce relative motion betweensaid dies, and a spacer normally provided between said die plate and oneof said dies, said spacer being removable to permit said die plate toimpress its full pressure on the blank.

2. In die mechanism for forming nozzles, the combination of a femaledie'having a tapered die opening, a male die having tapered sides, saidfemale die having a flange forming 'recess around the small end of saidtapered die opening, a ram for applying pressure toA said female die,and a removable spacer adapted for interposition between said ram andsaid female die.

3. In combination, a male die, a female die, a die plate adapted toproduce relative motion between said dies, said female die engaging aflange on the nozzle blank and shaping the same to form .a portion ofthe tubular neck of the nozzle, and a spacer provided between said dieplate and one of said dies, said spacer being proportioned in heightv tocause said die plate to contact with the end of said blank before thecompletion of the tubular neck.

4. In combination, a maladie, a female die, a die plate adapted toproduce relative motion between s aid dies, said female die engaging aflange on .the nozzle blank and shaping the same to form the rst portionof the tubular neck of the nozzle, and a spacer normally providedbetween Said die plate and said femaledie, said spacer beingproportioned in height -to cause said die plate to engage with the endof said blank and apply pressure thereto after the formation of saidfirst portion of the tubular neck to force metal from the solid part ofthe blank into a continuation of said tubular neck, said spacer beingremovable to permit said die plate to impress its full pressure on theblank.

5. In die mechanism for forming nozzles, in combination, a female diehaving a flaring opening therethrough, a male die relative to which saidfemale die moves, said male die being adapted to enter said openinginsaid' female die, and a die plate .movable as said female die relativeto said male die, whereby a blank may have a flange portion thereonshaped into a tubular neck and metal from its body forced between saiddies for addition to said neck.

In witness whereof, 'I hereunto subscribe my name this 10th March, 1924.p

JAMES HALL TAYLOR.

